"It is with the deepest sorrow we have to announce that on Sunday, 7 April, Mya-Lecia Naylor, very sadly, died," A&J Management said Wednesday on Twitter. "Mya-Lecia was hugely talented and a big part of A&J, we will miss her greatly."

The actress died after she collapsed Sunday and the cause of her death is not yet known, the BBC reported.

Naylor began acting as a toddler on the show Absolutely Fabulous. Before long, she was being cast in TV movies and miniseries.

Her big break came in 2014 when she cast in Millie Inbetween as the character Fran. After four years on that show, she landed the part of Mya on Almost Never.

Those two shows with CBBC are what she was best known for.

In a statement Wednesday, CBBC said Naylor "was a much-loved part of the BBC Children's family, and a hugely talented actress, singer and dancer."

Game of Thrones actress Nathalie Emmanuel, who is from England and was with the same management company as Naylor, took to Twitter to share her condolences.

Very sad to hear the tragic news of Mya-Lecia Naylor’s passing. She was a part of the @aj_management family who represent me in the UK. Although I didnot know her personally, I wanted to send my condolences to her family, friends and colleagues at this difficult time ❤️

"Very sad to hear the tragic news of May-Lecia Naylor's passing," she said, adding, "Although I did not know her personally, I wanted to send my condolences to her family, friends and colleagues at this difficult time."

CBBC said that the news of Naylor's passing is "very upsetting," and invited fans to share feelings with friends and family.

"We will miss her enormously and we are sure that you will want to join us in sending all our love to her family and friends," the network said.

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Notable deaths of 2019

Grumpy Cat

Grumpy Cat sits on a pillow at a special appearance at Bleecker Street Records in New York City on July 16, 2014. The Internet-famous feline, real name Tardar Sauce, died of complications from a recent urinary tract infection at the age of 7 on May 14. File Photo by John Angelillo/UPI | License Photo

I.M. Pei

Architect I.M. Pei chats with members attending the 12th Annual Committee of 100 conference -- which he founded in 1991-- on April 24, 2003. The world-renowned architect died at the age of 102 on May 16. Photo by ep/Ezio Petersen/UPI | License Photo

Tim Conway

Comedian Tim Conway poses for photographers at the 17th Annual Screen Actors Guild Awards held in Los Angeles on January 30, 2011. Conway, a television and film actor best known for starring in "The Carol Burnett Show," died at the age of 85 on May 14. Photo by Paul Buck/EPA-EFE

Doris Day

Doris Day (L) with former President Ronald Reagan during his years as an actor in the 1952 film "The Winning Team." Day, a Hollywood screen legend, singer and animal welfare advocate, died at the age of 97 on May 13 in California. The actress headlined The Doris Day Show on CBS which ran for five seasons from 1968 to 1973. UPI File Photo | License Photo

Peggy Lipton

Cast member Peggy Lipton attends the premiere of "When In Rome" in Los Angeles on January 27, 2010. The "Mod Squad" and "Twin Peaks" actress died of cancer at the age of 72 on May 11. File Photo by Jim Ruymen/UPI | License Photo

Peter Mayhew

Cast member Peter Mayhew attends the premiere of "Star Wars: The Last Jedi" in Los Angeles on December 9, 2017. Mayhew, best known as the actor who played Chewbecca in the Star Wars films, died on April 30 at his home in North Texas. File Photo by Jim Ruymen/UPI | License Photo

Ellen Tauscher

Then Undersecretary of State for Arms Control and International Security Ellen Tauscher testifies before a House Armed Services Committee Hearing on October 1, 2009. The former congresswoman and senior arms-control adviser to President Barack Obama died at the age of 67 on April 30. File Photo by Kevin Dietsch/UPI | License Photo

John Singleton

Director John Singleton arrives on the red carpet for the Academy Awards on Los Angeles on March 4, 2018. Singleton died 12 days after having having a stroke in Los Angeles on April 29. Singleton was the first black and youngest filmmaker to be nominated for an Oscar for Best Director in 1991 for Boyz N the Hood. File Photo by Jim Ruymen/UPI | License Photo

Sen. Richard Lugar

Then Sen. Richard Lugar, R-Ind., speaks to the media on Capitol Hill in Washington, D.C. on December 13, 2010. The six-term Republican senator and former Indianapolis mayor died at the age of 87 on April 28 due to complications from chronic inflammatory demyelinating polyneuropathy. File Photo by Kevin Dietsch/UPI | License Photo

Ernest Hollings

Then Sen. Ernest Hollings, D-S.C., makes a statement on Capitol Hill in Washington, D.C. on April 9, 2003. The longtime U.S. Senator Hollings, also a past South Carolina governor, died April 6 at age 97. File Photo by Roger L. Wollenberg/UPI | License Photo

Seymour Cassel

Seymour Cassel arrives for the premiere of his new movie "Lonesome Jim" in New York City on March 21, 2006. Cassel, best known for starring in a number of films from directors John Cassavetes and Wes Anderson, died from complications of Alzheimer's disease on April 6 at 84 years old. File Photo by Laura Cavanaugh/UPI | License Photo

Nipsey Hussle

Nipsy Hussle (R) and his daughter Emani Asghedom are pictured arriving for the 61st annual Grammy Awards in Los Angeles on February 10, 2019. Ermias Ashgedom -- better known as rapper Nipsey Hussle -- was shot dead in Los Angeles on March 31 a day before he was set to meet with police to discuss gang violence. Hours before he was shot Sunday, Nipsey Hussle tweeted, "Having strong enemies is a blessing." File Photo by Jim Ruymen/UPI | License Photo

Agnes Varda

Agnes Varda arrives at the award photo call after receiving the "Honorary Palme d'Or" prize during the 68th annual Cannes International Film Festival in Cannes, France on May 24, 2015. The French film director, known for her films "Cléo from 5 to 7" and Vagabond" died of cancer in her home at the age of 90. File Photo by David Silpa/UPI | License Photo

Alan Kruege

Alan Krueger, then-President Obama's nominee to lead the Council of Economic Advisers, is seen as Obama introduces him in the Rose Garden at the White House on August 29, 2011. Krueger died the weekend of March 16 at age 58. Krueger served as chief economist at the Department of Labor for President Bill Clinton, chair of the Council of Economic Advisers for President Barack Obama and was a professor of political economy at Princeton. File Photo by Kevin Dietsch/UPI | License Photo

Ted Lindsay

Ted Lindsay, former player of the Detroit Red Wings, arrives for the 2012 NHL Awards at the Encore Theater in Las Vegas on June 20, 2012. Lindsay died March 4 at age 93. The 1966 Hockey Hall of Fame inductee played 17 seasons, including 14 years with the Red Wings and three years with the Chicago Black Hawks. File Photo by David Becker/UPI | License Photo

Luke Perry

Luke Perry arrives on the red carpet at the CW Upfront on May 18, 2017 in New York City. Perry, the "Beverly Hills, 90210" alum and "Riverdale" star, died on March 4 after having a "massive" stroke. Perry was 52. File Photo by John Angelillo/UPI | License Photo

Keith Flint

Keith Flint, of the English electronic dance music band The Prodigy, performs during a concert at the 24th annual Les Vieilles Charrues Festival in Carhaix, France on July 18, 2015. Flint died on March 4 at his home in Essex, England at 49 years old. Flint, known for his colorful, spiked hair and high-energy performances, originally joined The Prodigy as a dancer before becoming their frontman. Photo by Hugo Marie/ EPA-EFE

Katherine Helmond

Actress Katherine Helmond, the voice of Lizzie in "Cars," dodges raindrops as she walks the red carpet at the world premiere of the film at Lowe's Motor Speedway in Charlotte, N.C. on May 26, 2006. Helmond died on March 1 of complications from Alzheimer's disease at age 89. Helmond was best known for her role as as Mona Robinson on "Who's the Boss?" File Photo by Bob Carey/UPI | License Photo

Peter Tork

Peter Tork with The Monkees perform at the Mizner Park Amphitheatre in Boca Raton, Fla. on July 27, 2013. Tork, a bass player and keyboardist for the Monkees, died February 21 at age 77. The Monkees sold millions of albums and released No. 1 hits, including "I'm a Believer." File Photo by Michael Bush/UPI | License Photo

Don Newcombe

Dodgers greats Maury Wills (L) and Don Newcombe chat before a press conference in center field at Dodger Stadium in Los Angeles on May 2, 2012. Newcombe died on February 19 at 92 years old after a lengthy illness. Newcombe won the first Cy Young Award in Major League Baseball history in 1956. He also won the National League MVP award that season. File Photo by Jayne Kamin-Oncea | License Photo

Karl Lagerfeld

Karl Lagerfeld arrives on the red carpet at the WWD Honors on October 24, 2017 in New York City. Lagerfeld, fashion industry icon and Chanel creative director, died at 85 years old on February 19 in Paris. File Photo by John Angelillo/UPI | License Photo

Lee Radziwill

Lee Radziwill leads the way for her sister, Jacqueline Onassis, as they attend Caroline Kennedy's graduation at Concord Academy on June 5, 1975. Radziwill, socialite and the younger sister of former first lady Jacqueline Kennedy Onassis, died of natural causes on February 15. She was 85. UPI File Photo | License Photo

Rep. Walter Jones

Rep. Walter Jones, R-N.C., speaks with members of the press at a news conference on June 16, 2005 in Washington, D.C. Barely a month after beginning his 13th term in Congress, longtime North Carolina Republican Rep. Walter Jones died on February 10 -- his 76th birthday -- after being in hospice care for a month. Jones is perhaps best known for expressing regret over his 2003 vote authorizing the President George W. Bush's invasion of Iraq. File Photo by Michael Kleinfeld/UPI | License Photo

John Dingell

Then-Rep. John Dingell, D-Mich., attends at a news conference in Washington, D.C. on July 27, 2011. Dingell, the longest-serving member of Congress in U.S. history, died February 7 at the age of 92. He had cancer. Dingell received the Presidential Medal of Freedom in 2014 from President Barack Obama. File Photo by Kevin Dietsch/UPI | License Photo

Frank Robinson

Baseball legend Frank Robinson throws out the honorary first pitch before game three of the NLDS playoff on October 10, 2012 in Washington, D.C. The Baseball Hall of Famer died February 7 at age 83. Robinson was the first manager of the Nationals in Washington, D.C. File Photo by Pat Benic/UPI | License Photo

Kristoff St. John

"Young and the Restless" actor Kristoff St. John, shown here accepting a Daytime Emmy Award in 2008, died February 3 at his California home. He was 52. File Photo by Jim Ruymen/UPI | License Photo

James Ingram

Grammy Award-winning R&B singer James Ingram, shown here in 2004, died at age 66. He was known for songs "One Hundred Ways" and "Yah Mo B There." File Photo by Francis Specker/UPI | License Photo

Carol Channing

Broadway singer Carol Channing, shown at the Kennedy Center Honors in 2010, died January 15 of natural causes at her home in Rancho Mirage, Calif. The actress, known for her work in "Hello, Dolly!" and "Gentlemen Prefer Blondes," was 97. File Photo by Mike Theiler/UPI | License Photo

Patricia Wald

Patricia Wald, the first woman to preside over the federal appeals court in the District of Columbia, died January 12 of pancreatic cancer. She was 90. In 2013, she was awarded the Presidential Medal of Freedom by President Barack Obama. File Photo by Kevin Dietsch/UPI | License Photo

Defense Secretary Harold Brown

Former U.S. Defense Secretary Harold Brown (R) died January 4 at his California home. Brown served under President Jimmy Carter and was the first scientist to run the Pentagon. He is pictured conferring with Sen. John Warner, R-Va., in December 1979. File Photo by Frank Cancellare/UPI | License Photo